Rock-crusher.



T. L. SMITH.

ROCK CRUSHER.

APPLICATION FILED AUGJZ, 1910.

Patented Allg. 26, 1913.

2 SHEETS-SHEET 1.

aucune? T. L. SMITH.

ROCK CRUSHER. APPLICATION FILED 4119.12, 1910.

Patented Aug.26,1913.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oEEioE.

THOMAS L. SMITH, OF MILWAUKEE, WISCONSIN.

Specification of Letters Patent. Application tiled August 12, 1910.Serial No. 576,842.n l

u Patented Aug. 26, 1913.

vwaukee, Vin the. county ot' Milwaukee and State of Wisconsin, haveinvented a new and ing is a speciication.

y y invention relates to improvements in rock Crushers and the objectsof my improvement are to provide a relatively small machine, that can bebuilt at a reasonable cost, and'- will retain the advantages oi theobstructed 'feed opening in order that a larger piece may be crushedtherein than in the present form of machines of similar type, alsotorovide a ball and socket joint of ample sur ace to resist the heavystrains of crushing and to so place this spherical bearing as tol avoidall obstruction of the feed opening.

1n the drawings whichoare al part ot this specification, Figure 1 is avertical section through the longitudinal center line ot the machine.Fig. 2 is a plan view of the machine, Fig. 3 is an end view of thedevice without the pulley, drawn to a smaller scale with half of thestationary crushing plate broken away, 'and Fig. 4 shows one of thedistance washers. Y

10 is the frame of the machine provided with the tour feet, 11, throughwhich the Crusher is bolted down to its foundations, 12. Running inbabbitted bearings, 1t in the frame is the eccentric sleeve, 15. Theoutside of this sleeve is turned on the center line a a and the sleeveis bored on thecenter line b b these two lines intersectingin the pointt). The Crusher shaft or stem 16 is free to turn in the eccentricVbearings of the sleeve 15. The bevel gear 17 is secured to the rear endot' the sleeve 15 and the cross shaft 18, supported in the journalYboxes 19 carries the driving pulley 20 and the driving pinion 21. rlhegearing is inclosed in the housing 22'. rlhe t'orward end of the shaftlcarries the moving crusher head 23 which forms a partial spher- VV icalball and socket joint with the front end titl! A bearing beingY thepoint C. As the sleeve 1:5v

of the frame 10, the center of this spherical is rotated the center lineb b will gyrate around the center line a, a, and a Wabbling motion isproduced in the head 23.

24 and 25 are the hard steel or chilled iron plates betweenlwhich thecrushing is done.

rlhese plates are embedded in lead, cast into the spaces between theplates and their seats. lThe flange 26 at the forward end 'of the frameAcontains a groove 27 in which .the periphery of the head 23 makes aloose useful Rock-Crusher, of which the follow- `fit.

28 is a pipe connecting the groove 27 with a source of air, under slightpressure, so there is always a draft of air outward from the groove 27to prevent dust and grit from settling in the groove and working 'intothe l spherical bearing. gyratory principle, also to provide an uncan beloosened and washers 31 of the requi-V site thickness put in place oneach bolt. The

-sleeve 15 is positioned by the bevel gear 17 working against the end ofthe frame 10 and the plate 32 secured to the shaft 16 and forming apartial spherical joint with the end of the sleeve 15, said joint havingthe point C for a center.

When the machine is running empty, the

shaft 16 and head 23 will take up the rotation of the sleeve 15. 'Whemhowever, the head 23 meets with resistance to its wabbling due to thepressure of rock or ore between the Crusher plates, the rotation of head23 will cease although the wabbling will continue. The plate 25 will beheld upto its work by the spherical bearing which will,

therefore, take the strain of crushing: Al-4 though this strain isheavy, the relative movement of the ball and socket is very small7 thusreducing the work of friction. rl"he work of gyrating the head isperformed principally by the eccentric bearing of the shaft 16 near thedriving shaft 18, and the long leverage froml the center C to thisgearing renders the movement very power- By positioning the s vhericalbearing vdi- -rectly behind the mova le Crusher head' the stress towhich the Crusher head is subjected ,is directly transferred to thebearing and as ,the bearing' is nearly 'equal in diameter to thecrushing surface of the Crusher head it lies'in the direct lne'of stressfor practically all portions Aof the ycrushing face so that the crushinghead moves as a wedge betweenvthe resisting material the bearing. Thecenter C of the spherical bearing being positioned at approximately thecenter of the space between the crushing faces gives to the movableCrusher hea-d for the greater portion of its effective crushing surfacea maximum degree of localized directapproach and recedence with relationto the stationary crushing head. This spherical bearing directly behindthe movable crushing head gives to it the effect of being piv otallymounted at the point C midway between the crushing surfaces without theformation of an obstruction to the feed of material between the crushingfaces and permits of the practically localized direct approach andrecedence of the greater portion of the crushing face without imposingstress to a material degree upon the driving mechy anism. The approachand -recedence of the portions of the crushing surface of the movablecrushing head with relation to the stationary crushing head is referredto as localized in contradistinction to the approach and recedence whichtakes place with a Crusher head of the oscillating type instead of thegyrating type of the present invention, for in the oscillating type ofCrusher head the movement is more or less a bodily movement instead of alocalized movement in which the nearest point of aplproach of theCrusher head travels around t-he axis of the movable crusher head.

What I claim as my invention and desire to secure by Letters Patent is:

1. A rock crusher comprising a frame bored longitudinally, a stationaryplane crushing surface attached to said frame at an angle to said bore,an eccentrically bored Sleeve rotatable in said bore and provided on itsrear end with driving means, a shaft rotatable in said eccentric sleeveand provided at its front end with a crushing head the crushing surfaceof which is in opposing proximity to said stationary crushing surfaceand is perpendicular to said shaft.

2. A rock crusher comprising a frame, a stationary Crusher surfaceattached to said frame, a movable crusher head engaging'the frame bymeans of a partial spherical bearing, an eccentrically bored sleeverotatably mounted in the frame, a shaft attached to the crusher headsubstantially perpendicular to the crushing surface of the head andmounted in the bore of the sleeve, the prolonged center lines of thesleeve and shaft meeting in the center of the spherical bearing, andmeans for rotating the eccentric sleeve.

3. A rock Crusher comprising a frame, a Crusher plate attached thereto,a movable crusherhead on a ball and socket bearing, an eccentric sleevein the frame, a shaft in said sleeve and carrying the Crusher head saidshaft being perpendicular to the crushing surface of said head, thecenter lines of the sleeve and shaft intersecting in the center of theball and socket bearing, and driving means attached to said sleeve.

4. A. crusher, comprising a stationary crushing member,a movablecrushing member opposed thereto, a spherical bearing for the movablecrushing member on the opposite side thereof from the stationarycrushing member constituting a pivotal support for the movable crushingmember with its pivotal center approximately midway between the crushingsurfaces of the crushing members, and means fory moving the movablecrushing member on its bearing.

5. A crusher, 'comprising a stationary crushing member having a planecrushing surface, a movable crushing member with a plane crushingsurface opposed to the stationary crushing member with its crushingsurface at an angle to the crushing surface of the stationary crushingmember to form a tapering passageway therebetween, a

member at lthe rear thereof forming a pivotal support for the movablecrushing member with the pivotal center approximately midway bet-Weenthe crushing faces, and means for moving the movable crushing member onits bearing.

6. A crusher, comprising a frame,r a stationary crushing member mountedthereon, a suitably driven sleeve journaled in the frame and providedwith an eccentric bore, a stem journaled in the eccentric bore of thesleeve, a movable crusher head mounted on the stem and provided with aspherical bearing portion, a spherical bearing on the frame receivingthe spherical bearing portion of the Crusher head and forming therewitha pivotal support for the Crusher head with the pivotal centerapproximately midway between the crusher head and the stationarycrushing member.

In testimony of which', I have attached my hand, in the presence of twowitnesses.

THOMAS L. SMITH.

Witnesses y E. O. MAULTRlow, y H. H. GERLACH.

lspherical bearing for the movable crushing

